app.py

#
# Aura Engine API (https://gitlab.servus.at/aura/engine-api)
#
# Copyright (C) 2020 - The Aura Engine Team.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import sys
import os
import atexit

sys.path.append(os.path.join(os.path.dirname(__file__), '..'))

import connexion

from base.config    import AuraConfig
from base.logger    import AuraLogger
from rest           import encoder
from service        import ApiService
from sync           import SyncJob
from models         import db, ma


# App Initialization

config = AuraConfig()
logger = AuraLogger(config, "engine-api").logger
sync_job = None

def build_app(app):
    app.json_encoder = encoder.JSONEncoder
    app.config["SQLALCHEMY_DATABASE_URI"] = config.get_database_uri()
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    app.config['ENV'] = "development"
    app.config['FLASK_ENV'] = "development"
    if config.get("debug_flask") == "true":
        app.config['DEBUG'] = True
    db.init_app(app)
    ma.init_app(app)
    return app

api = connexion.App(__name__, specification_dir='rest/swagger', arguments={'title': 'AURA Engine API'})
api.add_api('swagger.yaml', pythonic_params=True)
app = build_app(api.app)


def startup():
    """
    Startup Server.
    """
    port = config.get("api_port")
    api.run(port=port)


def shutdown():
    """
    Called when the application shuts down.
    """
    sync_job.exit()


with app.app_context():
    """
    Initialize Server.
    """
    db.create_all()
    service = ApiService(config, logger)
    app.config['SERVICE'] = service
    sync_job = SyncJob(config, logger, app)
    sync_job.start()
    atexit.register(shutdown)
    logger.info("Engine API server initialized.")


if __name__ == '__main__':
    startup()